Play-pipe pressure-equalizer.



W. B. STREBIG.

PLAY PIPE PRESSURE EQUALIZER.

APPLICATION FILED MAR.17, 1911.

1,048,004, Patented Dec. 24, 1912.

v WITNESSES: M JNVENTOR.

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UNITED STATES PATENT OFFICE.

WILLIAM B. STREBIG, OF FORT WAYNE, INDIANA.

PLAY-PIPE PRESSURE'EQUALIZERI To all whom it may concern Be it knownthat I, WILLIAM B. STREBIG, a citizen of the United States, residing atFort Wayne, in the county of Allen, in the State of Indiana, haveinvented certain new and useful Improvements in Play-PipePressure-Equalizers; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in theart to which it appertains to make and use thesame, reference being had to the accompanying drawings which form partof this specification.

My invention relates to improvements in play pipe pressure equalizers.

It is well known that in fighting fires the firemen who hold the playpipe nozzle are often required to stand uponladders in an elevatedposition, and upon narrow walls and other insecure positions; that thewater pressure through the hose nozzle is invariably so great that itrequires several men to hold the nozzle in order to control the unequallateral pressure therein which causes a violent movement of the hose inunexpected direct-ions, thereby interfering with the proper applicationof the stream to the point desired and also endangering safety of themen by the violent and eccentric movement of the nozzle.

The object, therefore, of my invention is to provide a cheap, simple andefficient means for so controlling this unequal pressure of the waterwithin the nozzle as to enable a single operator to readily andconveniently handle the same in use, and so constructed as to be readilyadjusted or removed from an ordinary play pipe nozzle without any changeof construction thereof so that the same nozzle can be employed withequal facility either with or without the use of my invention.

My invention consists of two cooperating parts, viz; a ring looselymounted within the inner end of the nozzle and a concentrically arrangedconcaved disk adjacent to the outer face of the ring, and provided witha suitable guide or means for maintaining the samein its operativeposition and relation with the ring without contact of the disk with theadjacent side of the containingnozzle.

It is believed that the principal novel feature of my present inventionresides in the construction whereby the same can be readily adjustedwithin or removed from any Specification of Letters Patent.

Application filed March 17, 1911.

Patented Dec. 24, 1912 Serial No. 615,026.

ordinary fire extinguishing play pipe nozzle without any structuralmodification thereof or addition thereto.

In the accompanying drawing illustrating my invention and in whichsimilar reference numerals indicate like parts throughout the severalviews, Figure l is a fragmentary side view of an ordinary play pipenozzle connected to an ordinary hose by means of an ordinary sleeve allshown partly in longitudinal section and also showing my invention inlongitudinal central section in operative position therein. Fig. 2 is aplan view of the ring portion of my invention, and Fig. 3 is a crosssection of the same on the line ma2 Fig. 2. Fig. 4 is a side view partlyin section of the pressure reducing disk with the means for securing thesame in position. Fig. 5 is a side view of the same taken at rightangles to Fig. 4.

Referring now particularly to Fig. l the hose 1 and the nozzle 2 areboth of the usual or any other proper construction, and are united inthe usual manner by common form of metallic sleeve 3 having its forwardend externally screw-threaded at 4 to receive the internallyscrew-threaded annularly enlarged rear end 5 of the nozzle 2 and isprovided with an external annular flange 6 to limit the forwardadjustment of the hose 1. Adjacent to the forward end of the sleeve 8and resting against the same is loosely mounted a metallic ring 7 havinga beveled concentric opening 8 whose greatest diameter is upon the outerface of the ring. \Vithin the nozzle at a proper distance from the outerface of the ring 7 is arranged a conical disk 9 having upon its forwardend the concentric transversely slotted lug 10 to which is rigidly fixedan extended guide 12 consisting of a thin sheet metal plate whose upperend embraces the disk and is provided with a pair of diametric lugs 13adapted to engage the adjacent face of the ring '7 and thereby hold thesame firmly in position upon the seat on the inner end of the sleeve 3.The opposite edges of the guide plate 12 are slightly beveled to conformto the contour of the nozzle against the inner face of briefly stated isas follows: When the water enters the ring through the small end of theopening 8 it will be directed by the inclined sides of the openingagainst the concave face of the disk 7 and to the annular opening 14:which may be of any desired dimensions. As the stream is thusinterrupted by the ring 7 and the disk 9 its force will beproportionately and materially reduced as it issues from the nozzle.While it may not be desirable to thus reduce the water pressure underall circumstances as where the stream is directed to a high point on theoutside of the building and the operators can have a secure footing uponthe ground, it is desirable to thus reduce such pressure when the streamis employed upon a lower point or when the men are upon a ladder, andparticularly when the stream is directed upon some point upon theinterior of a building where the very high pressure is not necessary.

While the mere form and contour of the operative parts of my inventionmay be modified at pleasure without departing from the spirit of myinvention I prefer the specific construction herein shown and described.l/Vhile the ring 7 may be omitted and the disk 9 alone employed inobvious manner such omission has been found by practical tests tointerfere with the convenience and eiliciency of my invention.

Having thus described my invention and the manner of employing the samewhat I desire to secure by Letters Patent is:

1. In a water-hose line, a play pipe; a nozzle united thereto by ascrew-threaded connection; and water pressure regulating means looselymounted within the said nozzle, and consisting of a ring having abeveled opening, and a winged concavo-convex disk arranged incooperative relation tothe said ring and spaced from the inner walls ofthe nozzle, the said disk being loosely supported in position by theimpingement of the said wings against the inclined walls of the nozzle,the said wings cooperating with the play-pipe for firmly securing thesaid ring in position.

2. A water pressure regulator for playpipes consisting of a convergingnozzle; a ring having an opening with diverging walls and arrangedwithin the inner end of the nozzle; a winged disk arranged adjacent tosaid ring with an annular opening about the same, and supported inposition by the impingement of the disk wings against the walls of thenozzle; and means for securing the said ring against displacement inuse.

3. A water-pressure regulator for play pipes consisting of a waternozzle, a ring having an opening with diverging walls and looselymounted at the inner end of the nozzle; a disk having a concave face andlateral wings whose rear ends normally bear against the adjacent face ofthe ring, and whose forward ends bear against the inner walls of thenozzle to secure the disk in operative position.

Signed by me at Fort WVayne, Allen county, State of Indiana, this 13thday of March, 1911.

WILLIAM B. STREBIG.

Witnesses:

HELEN DENNY, ANNA L. DENNY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). G.

